python - looping though a dataframe element by element -

-

if have data frame df (indexed integer) 

        bbg.kabn.s  bbg.tka.s   bbg.con.s   bbg.isat.s index                0       -0.004881   0.008011    0.007047    -0.000307 1       -0.004881   0.008011    0.007047    -0.000307 2       -0.005821   -0.016792   -0.016111   0.001028 3       0.000588    0.019169    -0.000307   -0.001832 4       0.007468    -0.011277   -0.003273   0.004355

and want iterate though each element individually (by row , column) know need use .iloc(row,column) let me know if need create 2 loops (one row , 1 column) , how please?

i guess like:

for col in rollreturnrandomdf.keys():         row in rollreturnrandomdf.iterrows():         item = df.iloc(col,row)

but unsure of exact syntax. me out please?

maybe try using df.values.ravel().

import pandas pd import numpy np  # data # ================= df = pd.dataframe(np.arange(25).reshape(5,5), columns='a b c d e'.split())  out[72]:        b   c   d   e 0   0   1   2   3   4 1   5   6   7   8   9 2  10  11  12  13  14 3  15  16  17  18  19 4  20  21  22  23  24   # np.ravel # ================= df.values.ravel()  out[74]:  array([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,        21, 22, 23, 24])  item in df.values.ravel():     # item

Comments

Post a Comment

Popular posts from this blog

python - No exponential form of the z-axis in matplotlib-3D-plots -

-
Image
i have similar problem described in how prevent numbers being changed exponential form in python matplotlib figure : i don't want (in special case) weird scientific formatting of axis. problem different have problem @ z -axis. 2-d plots can use ax.get_yaxis().get_major_formatter().set_useoffset(false) . , there no function ax.get_zaxis() what use format z -axis same way? edit: example: from mpl_toolkits.mplot3d import axes3d import numpy np import sys import matplotlib import matplotlib.pyplot pyplot def func(xi, ti): res = 10e3 + np.cos(ti) * np.sin(xi) return res if __name__ == '__main__': timespacing = 20 timestart = 0 timeend = 1 time = np.linspace(timestart, timeend, timespacing) widthspacing = 50 widthstart = 0 widthend = 3 width = np.linspace(widthstart, widthend, widthspacing) reslist = [] matplotlib.rcparams['legend.fontsize'] = 10 fig = pyplot.figure() ax = fig.gca(projection = '3d...
Read more

php - Best Light server (Linux + Web server + Database) for Raspberry Pi -

-
i install web server database on raspberry pi (little computer). computer has 1gb ram. i want know best combination: linux distribution , web server , dbms run local server multiple users minimal latency, use php on server. , best settings performance , not have bugs (memory usage, disable plugin, disable service, etc)? i thought light debian , lighttpd server , sqlite database. solution? i think lighttpd + sqlite great choice. linux distro, debian @ centos or tiny core linux , although i'm not sure of compatibility pi. obviously, can't go wrong raspbian if want use in production , more stable performance, few more pi's , set them in cluster .
Read more

c# - "Newtonsoft.Json.JsonSerializationException unable to find constructor to use for types" error when deserializing class -

-
i developing app in xamarin android. have splash screen serialize class , pass mainactivity using intent . when try deserialize in mainactivity error message : "serializationexception unable find constructor use types" serialization : void loaddata() { currency currency = new currency(this); intent = new intent(this, typeof(mainactivity)); intent.putextra("currency", newtonsoft.json.jsonconvert.serializeobject(currency)); startactivity(intent); } deserialization : cur = newtonsoft.json.jsonconvert.deserializeobject<currency> (intent.getstringextra("currency")); // error here class constructor : public currency(context context) { thiscontext = context; } i began experiencing problem after added parameter context context constructor. has caused this? how can solve it? possible serialize/deserialize class has parameters? you need have empty constructor in currency class in order deserialize it. ...
Read more